Wheel-dressing mechanism



Mar. 6, 1923.

B. M. W. HANSON WHEEL DRESSING MECHANIEM T s'leets-sheet l Filed July :51, 1j;

Monnier Man e, 1923. 1,4475383 B. M. W. HANSON WHEEL DRES S ING MECHANIS M Filed July s1, 191s 5 sheets-sheer 2 a #5gg il OHFJEY Mar. 6, 17923.

l B. M. W. HANSON WHEEL DRESSING MECHANISM E sheets-sheet 5 Fed July 51 q, loro A BENGT Henson, on Hormonen,

Application .tiled I)'uly 33., wie.

To all whom# may concern: Be it known their ii, BENGT M. VV. Emission,l e cu'i-izen of the United States, residing uit Hariford. in the counzy oi Hartford and State Connecticut, have invented certain new end useful improvements in Wheel- Dressing Mechanism, of which lle following is specification.

The wheel dressing mechanism embodying the inrenion is puriculerly Well adapted for use with or es a peri of s grinding mechine of the type set forth in my copending applications for grinding machines, Serial No. 247,632 and Serial No. 24h63@ both filed on even date herewith. lo will be understood,however-,that the Wheel dressing: mccl1- enism is noiv limited to use in machines of this type but is of general application,

(lne of the objects of the invention is 'to provide :1 wheel dressingl mechanism having improved devices whereby it may be operai;- ed by power. Another object oi elle invention is to provide in0 combination with the power operning devices improved means whereby ^die dressing tool may be controlled automatically und xi-inenually. Ay further 'objec oi the invenfrion is to provide improved means. includingi u former. whereby the dressing tool noyflie guided to dress the Wheel to :my desired contour. Further objecis of the invention' 'vill be apparent from the following: speciicaxtion und claims.

in the ziccoinl'mnying drawings i have illustrated he. invention applied io o grindu ing machine which is similar in many respecis lo 'the machines shown in my aforesaid copendingf applications. it will he linden stood,y however, iliai, the drawings :ire in` tended lo loe merely illusretive und :ire not to be cons'rued as defining or limiting the scope of the invention, the accompanyA ingur claims being relied upon for thuis pur- UHU.

(if the drawings:

Fig'. l is a pien ,View shoif'ing the wheel dressing mechanism und some oi' the ports oi' rbc grinding; machin@ other ports being`r removed for the sake of elcurness.

Fig. L is u reusrerse veri-ioni sectionai View through iside grinding machine showing the wheel dressing mechanism. i

Fig. 3 is e plein View or" the devices which support end' guide the wheel dressing tool` Fig. d is e seciiionel View miren along the line l-f oFig. 3.

Fig. 5 is a detail View showing' the former.

The grinding machine is provided with o; mein frame lend agrinding Wheel 2 which is preferably mounied for romtion aibouiJ u horizoniel exis. rllhe wheel is carried by u. spindle which is supported in bearings 4 and 5. The workto be ground is indicated ai; end this is supported and roteted by suitable devices carried by a work supporting tobie 6. This tubie is movable ionf'erd and from the wheel under the control of suitable feeding mechanism indicated as e Whole by 7. Preferably lie 'ioble (i is mounted on u swinging euxiliury frame 8 `which is pivoted io the mein l'rume si: 9.

4For holding 1'rhe work in engfzlgeinen with the grinding wheel und for preventing deiection, one or more buck-rests are preferably provided/such as shown ut l0.

T he surface of 'che grinding Wheel 2 musi conform to the shape ofthe work no he Vground. For cyiindrical or uniformly tapered worlr the wheel is preferably cylindrical hroughout, For Work oelier sha-n straigh tapered work which varies in diulneter the wheel must be dressed to e contour corresponding ico the coureur of the worin ln order that the dressing of the wheel, wliel'herV for oylindricui grindin' or for contour grinding, may be easily am eccure'rely elieced, l provide e, speciul Wheel. dressing mechanism which constitutes o. pen inuneni, part of the machirief it isibo his wheel dressing mechanism t-liuff'my presen? invention periculorly rciees.

Formed in the bottom of the taloie 6 is u longihidinol d'ovetiriled recess which forms :i guider-luy. liided in this recess for sliding movement is e, slide ll. 'ilie slide ll'cer- .ries e wheel dressing tool if); of any usual or preferred construction. The slide is edepized izo he moved longi'udinelly of the table in the specs between the heiem of 1 il lout is 'inoun f is trensve'rgsely s muy loe moved :forwarder .in tnlilo'iind the top 'f the swinging freine Jl/*lien it moved the tool 'lill travels eilen the. snrjleoe oiI lie Wheel 'to properly dress and it. ln order'tlizi't the Wheel dreef' 4l l desired contour the eetly lof; the slide un eeeond slide l?) which -ovziole with respect to the means whereby tl'ie slide lsioliword simuitnneoush "Eli tlio longitudinal movement to enolne the tool to dress the wheel 'to the required cont-our. A'llliis means coni prises e oriner piste or ber 14. (shown in detail in Fig. 5) which is secured in :i rabbet formed, at the lower 'ront .edge of the table. '.llie front edge ot the former is shaped to eonorm lto the required contour of the Wheel and it will be understood that the former lei een oe removed and another former substitilted lowing o. diilei'ent contour. .llieslide i3 is provided with means for engaging the fro. mer 1.4i. this ineens preferably comprising liriieliet projecting upwurd from the il tl 'front end ot the slide und :i roller lo carried by tire lor'ioliet. Coil springs 17 are provided for pressing the slide rearward sind ior holding the. roller in engagement with the former 1l. As clearly shown in Fig. 2, the springs 17 are sented in the recesses in tlie slide 1S, the liront outer ends of the springs reacting; oosinst an abutment secured to the. slide 1.1i. irrei'ersbly there is o cover 18 secured to the table ond extending over the former und, theV roller to proteetnthein and exoluiile dirt; V

l ln order that tlie wheel may lie given exuetly; tli'e suine Contour us the former. it is necessary :tor the point oi tlie tool to :nove in ai, plaine which passes through the axis oit' vtlie wheel. shown. in Fig'. 2. the swingo; ironie is so 'ifiositioned tliut-tlie slide 13 s horizontal, the point of the tool l2 being the suinelevel us the axis oit' the Wheel. liter the wlieol lios been worn to :i smaller diameter7 tl'ie tool 1.9- niust oe moved rearward in order-to engage the Wheel.v This reurniird movement n'iiglit be eilected by swinging tlie 'freine 8` lout obviously this swinging; movement would incline the slide 13's!) that the tool l. would move in o plane not pussing throng-gli tlie wheel axis. The result would lie tliut the contour of tlie wheel would not contorni exactly to tlie contour of: 'the former. When the required contour.

vis suoli that the variations in tlie diameter of' Wlieelv are slight, tlie insicouracy resulting from tlio movement sliovedescribed would probably be sosinall as to lie negligilile; lint, in order/that the mueliine muy be adopted 'for tlie dressing oi? Wheels to conton:fs.e:-,=.using Widely dillerent dizuneters, l prei'er provide moons whereby the tool 12 may adjusted witiiout movil the from@ l or inelininfg tlie .slide illustrated,

Als

the tool 12 is connected iifitli the slide i3 by .means ol s secondtrensvei'se slide 19. This slide is movable undery the Control ol n screw 20 provided with si handle 2l.' .Preerelily greduotions are provided zit 22 whereby the amount of movement of the seiew may observed. By Ineens of the slide i9 the tool. l2 een be moved to compensate tor differences in diameter of the Wheel without mov ing the iframe 8 in suoli n way as to incline the slide 13. Y

For moving the `dido 11 longitudinally the' table, l preferably provide o. longitt nel threaded slial't or screw Q13 which mounted. at its ends in suitable bearingslin the table. llliis screw extends through ein Yaperture in the slide l1 and has threaded onf gegement' therewith. Tt will be seen tliet when the screw is turned the slide Will lie moved longitudinally, carrying Wit-li it the slides 13 and @which are et the seine` time moved forward or baolwzirclunder the eonpending application Serial No. 247,632, but

it will be understood that, if preferred., e

mechanism suoli as shoi'vnvii'mbi'y applieetion Serial llo. l347.6234 muy be* used.

As illustrated, o. suituble'liousifg 24 is se# cured to tlie table 'et the right-hond end and Itlie shalt 23 is extended into the housing; Rotstziloly mounted on the shalt *Within tlie housing; Ifire two gears, 25 and 26. @inlined to the shaft between the gearsis on onnularly grooved cluteli coller 27. 'This/coller lios teeth at one side adopted to engage pins carried by the geur 25 andliiis teeth et the other side adapted to e gege pins oerriod by the gear 2G. Rotstzibly mounted the lions ing; is a 'shaft 28 carrying albeit 'pulley '29 ot the right-hand end. The sliet 28 con ries o pinion 3,0 which. meshes with 'the geur 26 sind it also carries a gear 3l Wliielrineslies withv an idler gear 82, the idler geen' in turn meshing with the aforesaid gearQ- Rot-stably mounted at the pivotel ms of the swinging freine 8 is :i 'longitudi'nal shalt Connected witli the shaft 33 at its lele hund end is a belt lpulley 34e which is in fregister with a belt pulley 35 carried 'ny the spindle 3. A belt f-.pesses over 'and connects the two pulleys 34: and 35. it its right-hand end the shaft B3 carries o belt pulley 37 Wliicll'i is in register with the sferesuid pulley 29,* A belt 38 passes-'over und eonneets"theL two pulleys 37 and 229. lly Ineens of tlie iiieelianisni described the shaft 28 is driven continuously and 'is movulole4 with the swinging freine Without interrupting; or disturbing the power eonneotion For operating the clutch coller ijitlllt a-fl/ ses movement nlroei e verlie'el exis et 4:0. lFivoed to the lever 39 are rectangular shoes which lil; the groove in the collar 2T. Connected with the lever is second lerer il. 5 which extends forward. To this lever il here is pivoted e rod 42 which extends across the from, of lhe machine and' is snppored by hearings :n: 8 and il. Carried ny the rod l2 are handles 45. 45 by ineens w of which he rod con he moved longitudinelly lo shift the clutch. lWhen the clutch is engaged willi eliegear 2G `he sei-ew 23 is rotzied slowly in the direction to :nove the dressinglool :from left to right across le ithe wheel.

lWhen ehe elneh is shifted to lengage the gear'Q the dressing'tool is moved rapidly in the opposite direction. Preferably the rod 42 is 'provided with collars 46 sind 47 2o which are adapted to be engaged by the slide 13 lo automatically shi-fi; the rod sind prevent movement of the dressing tool be- A yond a predetermined limit in either direction. vl@ne or the other or both of the collars 25 may be adjustable along the rod, if desired. As will he apparent from the foregoing descripiion, the machine is primarily intended for the grindingr of n large number of similar pieces of Work.v In the vpremi liminsiry adapting and adjusting of the mnehine for elle Work to be done. it is first necessary coconslcruct :1 former 14 having its eli'eeziif'e edge shoped lo conform to the required contour of the finished work. 3o When suoli a formerl has been constructed it is pui in place in the machine and is used for dressing the tgrinding Wheel. For the dressing.; operation the :freine @is adjusted to bring ehe slide 13 into e level position @lo es shown in' Fig. 2. Assuming that the slide 11 is in its left-hand position7 the op eriilor, by means of the handle 2l. moves the' slide 19 fiar enough rearward to bring he tool 12 into engagement with the wheel. 45 Then the operator, by meeisof the rod 41.2;

shirts the movement of the 'slide 1l which carries the tool 12 :toward the right. .Unr-

ing this movement the position oli" the lool. l2 is controlledfloy the former 174, and, `he

@ conse oi lie sprin's l?, the ressnre of the lool egeinsi the W eel is deiniely limited. After movemen acrossl lhe wheel the slide is nnlsonieically stopped by the right-hond coller l'. ln initially dressing the Wheel 55 may be necessary to move the lool across. it several times. W hen this is required the opere-tor hy ineens of the rod 42, shifts the clutch 27 lo Inove'the slide 11 toward lie left. During the movement toward the left,

@o the lool may remain in engagement with she Wheel, but it is preferably withdrawn :either by moving the frame Sor by moving vshe' slide 19.. rlhe slide ll is euomnticelly stopped by ehe left-hond coller 4T. Then of Zlio tool een be moved howard the right as ed mechanism.

ing slide movable longilndinnlly along; the

face of he Wheel relolivelvlo ehe if: suppori, e rotatable screw iron movil L slide, power :ictnzied mechanism i'oi toting the serew in einher dire ion. and manually operable ineens for coni olling,- the power nein-tiled meehzinism *so sieri, slop and reverse the screw.

3. The colnbinnlion oli i rooehle grinding Whee, a Work support :iojoeent the wheel, a. Wheel dressingn 'i-ooi, o. lool carry ingslide movable longitudinally along the face of the wheel. relaii-i'S/'ely to the work support, 'power anointed meelninism'for moving' the slide in eil'her direction, :ind means compri e. ho'sizonml rod enending along lhe mini oilt worin snppor for snriirff sind siopping.; le power :ie-inzio yne slide aller inovemen 'eo e predetermined eXlenlL.

5. The ooinhinelion o? rototehle grind ing wheel. a Worlr sonneri. iduizieent the Wheel. wheel dressing* izool. lool curr/f ing' slide movable longitudine ly :along the face of lhe ville-el relelively lo the work support. power nein red i' Qian' .l for nietT4 ing the slide in en' oiroetion :ilong llie i'ziee of lhe Wheel i" menne for unioinzilieelly sioni slide elle? movement to any prede eifher direcei 5. ing wheel. a :along fzhe inve ol Y lefQ'rindf longitudinelly wheel. e. second slide carried by elle firsl sl'fle and movable trainsversely.thereof` o "1oz di' lng tool enrried by lhe second 'former for moving: lhe seeond l ord or from zhe wheel exis :is ihn 11o-ved longi'lndinzilljue lliird slide ferried hy lho ser'ond slide and movable 'ilh independently oi lh';, v. or from @he lie.

im support eajeefnl: the

loo

' img Wheo, work support and a wheol dressing tool carthrd slido,

7. fhff-.oombination of a rotatable grindxoounted for piv @ml moyemofm about, on mms pamlol with the ms of the wheol, o Wheel dressing tool,

fo md omjryng oihogaiork support, former Slide movable longtudnolly Apendomtly of the' Work suppor.

for movmg the tool mwaud of from the whoe mi@ o@ thev shde 1s moved longludumly, and moans suppemontal to the former i501' moving the tool toward or imm tho 'wheel am@ mda- 

